Opcode/ Instruction |
Op/ En |
64/32 bit Mode Support |
CPUID Feature Flag |
Description |
F3 0F 01 EE CLUI |
ZO |
V/I |
UINTR |
Clear user interrupt flag; user interrupts blocked when user interrupt flag cleared. |
Op/En |
Tuple |
Operand 1 |
Operand 2 |
Operand 3 |
Operand 4 |
ZO |
N/A |
N/A |
N/A |
N/A |
N/A |
CLUI clears the user interrupt flag (UIF). Its effect takes place immediately: a user interrupt cannot be delivered on the instruction boundary following CLUI.
An execution of CLUI inside a transactional region causes a transactional abort; the abort loads EAX as it would have had it been caused due to an execution of CLI.
UIF := 0;
None.
#UD |
The CLUI instruction is not recognized in protected mode. |
#UD |
The CLUI instruction is not recognized in real-address mode. |
#UD |
The CLUI instruction is not recognized in virtual-8086 mode. |
#UD |
The CLUI instruction is not recognized in compatibility mode. |
#UD |
If the LOCK prefix is used. If executed inside an enclave. If CR4.UINTR = 0. If CPUID.07H.0H:EDX.UINTR[bit 5] = 0. |